Lens power fine tuning device



FIG. 1 is a perspective view of the ornamental design of a lens power fine tuning device.

FIG. 2 is a top plan view of the lens power fine tuning device.

FIG. 3 is a side view of the lens power fine tuning device.

FIG. 4 is a front end view of the lens power fine tuning device; and,

FIG. 5 is a back end view of the lens power fine tuning device. 

The ornamental design for a lens power fine tuning device, as shown and described. 